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Enrichment mechanism and resource potential of shale-type helium:A case study of Wufeng Formation-Longmaxi Formation in Sichuan Basin

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Science China Earth Sciences 2023年第6期66卷 1279-1288页

作者： Haikuan NIE Quanyou liu Wei DANG Pei LI haikun SU Hanyong BAO Liang XIONG Zhujiang liu Chuanxiang SUN Peixian ZHANG State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efficient Development Beijing 102206China Sinopec Key Laboratory of Shale Oil/Gas Exploration and Production Technology Beijing 102206China Petroleum Exploration and Production Research Institute SINOPECBeijing 102206China Institute of Energy Research Peking UniversityBeijing 100871China School of Earth Sciences and Engineering Xi’an Shiyou UniversityXi’an 710065China School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China Research Institute of Exploration and Development Jianghan Oilfield CompanySINOPECWuhan 430223China Research Institute of Exploration and Development Southwest Oil&Gas CompanySINOPECChengdu 610041China Sinopec Exploration Company Chengdu 610041China Research Institute of Exploration and Development East China Petroleum&Gas BranchSINOPECNanjing 210019China

China’s helium resource is highly dependent on overseas ***-rich and U/Th-rich shale reservoirs generally contain helium,and although the helium content is low,the total reserve is ***,the effective development and utilisation of shale-type helium resources is a realistic way to improve the security of helium resources in *** this study,the generation mechanism,helium source and content,migration modes and pathways,controlling factors of enrichment,distribution pattern,and resource potential of the helium were analysed,using the Wufeng-Longmaxi shale in the Sichuan Basin and its ***,countermeasures were proposed for shale-type helium exploration and *** results show that the Wufeng-Longmaxi shale has a high content of U and Th and a good ability to generate *** helium is generated by a typical crustal source of helium and is characterised by self-generation,self-storage,and wide *** helium resource potential is a product of its content and the resources of the associated natural *** continuous supply of helium and effective preservation are the main geological factors that control the enrichment of shale-type *** preliminary evaluation results show that the reserves of helium in proven shale gas reserves are 10.8×10^(8)m^(3)in the Sichuan Basin and its periphery,where the extra-large helium fields are likely to be ***,0.0912×10^(8)m^(3)of helium was produced,along with the annual production of shale *** avoid the waste of helium and to improve the self-supply ability,it is suggested that research on the resource potential,enrichment mechanism,and distribution pattern of shale-type helium should be carried out as soon as possible,and helium extraction techniques for helium-bearing natural gas should be studied.

关键词： Shale Helium content Enrichment mechanism Resource potential Sichuan Basin

Oxidation behavior of non-stoichiometric(Zr,Hf,Ti)C_(x) carbide solid solution powders in air

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Journal of Advanced Ceramics 2021年第4期10卷 741-757页

作者： Huilin LUN Yi ZENG Xiang XIONG Ziming YE Zhongwei ZHANG Xingchao LI haikun CHEN Yufeng liu State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Science and Technology of Advanced Functional Composites Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China

Multi-component solid solutions with non-stoichiometric compositions are characteristics of ultra-high temperature carbides as promising materials for hypersonic ***,for group IV transition-metal carbides,the oxidation behavior of multi-component non-stoichiometric(Zr,Hf,Ti)C_(x)carbide solid solution has not been clarified *** present work fabricated four kinds of(Zr,Hf,Ti)C_(x)carbide solid solution powders by free-pressureless spark plasma sintering to investigate the oxidation behavior of(Zr,Hf,Ti)C_(x)in *** effects of metallic atom composition on oxidation resistance were *** results indicate that the oxidation kinetics of(Zr,Hf,Ti)C_(x)are composition dependent.A high Hf content in(Zr,Hf,Ti)C_(x)was beneficial to form an amorphous Zr-Hf-Ti-C-0 oxycarbide layer as an oxygen barrier to enhance the initial oxidation ***,an equiatomic ratio of metallic atoms reduced the growth rate of(Zr,Hf,Ti)O_(2)oxide,increasing its phase stability at high temperatures,which improved the oxidation activation energy of(Zr,Hf,Ti)C_(x).

关键词： ultra-high temperature ceramics(UHTCs) (Zr,Hf,Ti)C_(x)carbides oxidation behavior oxidation resistance free-pressureless spark plasma sintering

测风塔代表性对复杂地形风电场风能资源评估的影响

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江西科学 2020年第1期38卷 101-105页

作者：杨富程韩二红王彬滨刘海坤黄博文四川电力设计咨询有限责任公司

复杂地形风电场风能资源评估的准确与否,很大程度上决定于风电场测风塔的数量和测风塔的位置是否具有代表性。以已运行的某西南地区复杂地形风电场为例,采用风电场实际运行的数据资料,利用Windsim软件计算不同测风方案下风电场的风能资... 详细信息

复杂地形风电场风能资源评估的准确与否,很大程度上决定于风电场测风塔的数量和测风塔的位置是否具有代表性。以已运行的某西南地区复杂地形风电场为例,采用风电场实际运行的数据资料,利用Windsim软件计算不同测风方案下风电场的风能资源分布和年可利用小时数。结果表明,测风塔的代表性对复杂地形风电场风能资源评估有着极其重要的影响;测风塔的布设应综合考虑风电场地形地貌、海拔、距离以及遮挡效应等因素;合理选择具有代表性的测风塔,可以很大程度上降低风电场风能资源评估的不确定性。

关键词：复杂地形风电场测风塔 CFD 风能资源评估

基于深度学习和二维高斯拟合的视网膜血管管径测量方法

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中国医学物理学杂志 2019年第2期36卷 171-179页

作者：刘海坤王健杨嵩吴骏尹昌顺张凯张震裴新然吴帅天津工业大学电子与信息工程学院中国人民解放军空军93756部队教研部电子教研室

糖尿病、高血压等疾病会引起视网膜血管的形状发生变化,眼底图像血管分割是疾病定量分析过程中的关键步骤,对临床疾病的分析和诊断具有指导意义。本文提出一种视网膜血管管径自动测量方法。首先,将通道特征图叠加,同时通过使用深度可分... 详细信息

糖尿病、高血压等疾病会引起视网膜血管的形状发生变化,眼底图像血管分割是疾病定量分析过程中的关键步骤,对临床疾病的分析和诊断具有指导意义。本文提出一种视网膜血管管径自动测量方法。首先,将通道特征图叠加,同时通过使用深度可分离卷积来增加网络深度,将二者引用于全卷积神经网络中对血管网络进行分割;然后在分割的血管网络基础上,利用形态学细化和最小二乘拟合求取血管的中心线和方向;最后根据血管横截面灰度值分布特性,利用二维高斯拟合对血管中心线和方向进行校正,得到准确的血管方向和中心线位置进而计算血管管径。利用本文方法分别对REVIEW数据库中的3个图像集进行测试,测量的管径均值的标准差接近专家测量的标准差,表明本文血管管径测量方法的准确率高,实验结果验证了本文方法的准确性。

关键词：视网膜血管全卷积神经网络管径测量二维高斯拟合

Construction of apricot variety search engine based on deep learning

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Horticultural Plant Journal 2024年第2期10卷 387-397页

作者： Chen Chen Lin Wang Huimin liu Jing liu Wanyu Xu Mengzhen Huang Ningning Gou Chu Wang haikun Bai Gengjie Jia Tana Wuyun State Key Laboratory of Tree Genetics and Breeding Research Institute of Non-timber ForestryChinese Academy of ForestryZhengzhouHenan 450003China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenGuangdong 518120China Kernel-Apricot Engineering and Technology Research Center of State Forestry and Grassland Administration ZhengzhouHenan 450003China Key Laboratory of Non-timber Forest Germplasm Enhancement and Utilization of National Forestry and Grassland Administration ZhengzhouHenan 450003China

Apricot has a long history of cultivation and has many varieties and types. The traditional variety identification methods are timeconsuming and labor-consuming, posing grand challenges to apricot resource management. Tool development in this regard will help researchers quickly identify variety information. This study photographed apricot fruits outdoors and indoors and constructed a dataset that can precisely classify the fruits using a U-net model (F-score:99%), which helps to obtain the fruit's size, shape, and color features. Meanwhile, a variety search engine was constructed, which can search and identify variety from the database according to the above features. Besides, a mobile and web application (ApricotView) was developed, and the construction mode can be also applied to other varieties of fruit ***, we have collected four difficult-to-identify seed datasets and used the VGG16 model for training, with an accuracy of 97%, which provided an important basis for ApricotView. To address the difficulties in data collection bottlenecking apricot phenomics research, we developed the first apricot database platform of its kind (ApricotDIAP, http://***/) to accumulate, manage, and publicize scientific data of apricot.

关键词： Apricot Variety Convolutional neural network Deep learning Database platform Mobile application Image retrieval

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山东省第四纪地质研究新进展

山东地质 1999年第2期15卷 1-8页

作者：王世进张成基刘海坤丁孟三山东省地质科学实验研究院山东省地勘局地勘处中国地质科学院水文地质工程地质研究所山东省物化探勘查院

近年来山东省第四纪岩石地层划分对比取得了新进展，更新世中—晚期形成的厚层黄土堆积，分别划为羊栏河组和大站组；全新世早期发育有古湖沼沉积，划为黑土湖组。在探讨岩石地层单位的时代归属、穿时现象及第四纪地质发展史等方面，也... 详细信息

近年来山东省第四纪岩石地层划分对比取得了新进展，更新世中—晚期形成的厚层黄土堆积，分别划为羊栏河组和大站组；全新世早期发育有古湖沼沉积，划为黑土湖组。在探讨岩石地层单位的时代归属、穿时现象及第四纪地质发展史等方面，也获得了新的认识。

关键词：第四纪岩石地层划分地质时代地层序列山东省

The ubiquitin ligase Pelil inhibits ICOS and thereby Tfh-mediated immunity

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Cellular & Molecular Immunology 2021年第4期18卷 969-978页

作者： Xinfang Huang Shumeng Hao Junli liu Yuanyuan Huang Manman liu Chunyuan Xiao Yan Wang Siyu Pei Tao Yu Jing Xu haikun Wang Dongfang Dai Xiao Su Yichuan Xiao Department of Rheumatology Shanghai East Hospital Tongji UnrversitySchool of MedicineShanghai Giina CAS Key Laboratory of Tissue Microenvironment and Tumor Shanghai Institute of Nutrition and HealthChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghaiChina CAS Key Laboratory of Molecular Virology&Immunology Unit of Respiratory Infection and ImmunityInstitut Pasteur of ShanghaiChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghaiChina Department of Radiation Oncology The Affiliated Cancer Hospital of Nanjing M4edical University(Jiangsu Cancer Hospital)and Jiangsu Institute of Cancer ResearchNanjingJiangsuChina

T follicular helper(Tfh)cells are crucial for regulating autoimmune inflammation and protective immunity against viral ***,the molecular mechanism controlling Tfh cell differentiation is poorly ***,through two mixed bone marrow chimeric experiments,we identified Peli1,a T cell-enriched E3 ubiquitin ligase,as an intrinsic regulator that inhibits Tfh cell ***1 deficiency significantly promoted c-Rel-mediated inducible T-cell costimulator(ICOS)expression,and PELI1 mRNA expression was negatively associated with ICOS expression on human CD4^(+)T ***,increased ICOS expression on Peli1-KO CD4^(+)T cells enhanced the activation of PI3K-AKT signaling and thus suppressed the expression of Klf2,a transcription factor that inhibits Tfh ***,reconstitution of Klf2 abolished the differences in Tfh differentiation and germinal center reaction between WT and Peli1-KO *** a consequence,Peli1-deficient CD4^(+)T cells promoted lupus-like autoimmunity but protected against H1N1 influenza virus infection in mouse ***,our findings established Peli1 as a critical negative regulator of Tfh differentiation and indicated that targeting Peli1 may have beneficial therapeutic effects in Tfhrelated autoimmunity or infectious diseases.

关键词： T follicular helper cells Peli1 ICOS

NUIST ESM v3 Data Submission to CMIP6

维普期刊数据库评论

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Advances in Atmospheric Sciences 2021年第2期38卷 268-284页

作者： Jian CAO Libin MA Fei liu Jing CHAI haikun ZHAO Qiong HE Bo WANG Yan BAO Juan LI Young-min YANG Hua DENG Bin WANG Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science and TechnologyNanjing 210044China Earth System Modeling Center Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Department of Atmospheric Sciences University of Hawaii at ManoaHonoluluHI 96825USA

This paper introduces the experimental designs and outputs of the Diagnostic,Evaluation and Characterization of Klima(DECK),historical,Scenario Model Intercomparison Project(MIP),and Paleoclimate MIP(PMIP)experiments from the Nanjing University of Information Science and Technology Earth System Model version 3(NESM3).Results show that NESM3 reasonably simulates the modern climate and the major internal modes of climate *** the Scenario MIP experiment,changes in the projected surface air temperature(SAT)show robust“Northern Hemisphere(NH)warmer than Southern Hemisphere(SH)”and“land warmer than ocean”patterns,as well as an El Niño-like warming over the tropical *** in the projected precipitation exhibit“NH wetter than SH”and“eastern hemisphere gets wetter and western hemisphere gets drier”patterns over the *** precipitation patterns are driven by circulation changes owing to the inhomogeneous warming *** PMIP experiments show enlarged seasonal cycles of SAT and precipitation over the NH due to the seasonal redistribution of solar *** in the climatological mean SAT,precipitation,and ENSO amplitudes are consistent with the results from PMIP4 *** NESM3 outputs are available on the Earth System Grid Federation nodes for data users.

关键词： NESM3 CMIP6 Scenario MIP PMIP

Sensitivity Analysis of Optimal Control Problems for Switched Systems

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Sensitivity Analysis of Optimal Control Problems for Switche...